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Do you use inside diameter or outside diameter when calculating the area of a pipe?
When dealing with pipe the volume is more important, therefore, I would use the inside diameter.
How do you find the area of a shape with a shape inside of it?
You would find the area of the inside and outside shape (pretending that the inside shape was not in the outside shape). then, you would take the area of the outside shape and subtract the area of the inside shape.
Is the area the inside or the outside?
The area is the inside. The perimiter is around. If its a rectangle, to find the area you multiply the lengths of two sides
What is inside area of a pipe 6 inches in diameter by 7 feet long?
It is: 0.5*pi*7 = 11 square feet rounded
How do you calculate the volume of a circular pipe?
Take the inside diameter, from inner edge to opposite inner edge and going through the middle. Divide this by two to give you an inside radius. Multiply this by itself to give the radius squared, then multiply this by Pi to give inside area. Finally, multiply this by the length of the pipe to give the volume.
